From 964f9b70770997b21542472220f8a08f224f7650 Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Sat, 8 May 2021 10:44:00 +0100 Subject: minor fixes --- .../2018-06-01-realistic-load-testing-with-ioriot-for-linux.html | 2 +- content/html/gemfeed/atom.xml | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'content/html/gemfeed') diff --git a/content/html/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html b/content/html/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html index 741998a8..895652d5 100644 --- a/content/html/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html +++ b/content/html/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html @@ -72,7 +72,7 @@ jgs\__/'---'\__/ % sudo ioriot -c io.capture Screenshot I/O recording:Screenshot I/O recording
-

A Ctrl-C (SIGINT) stops recording prematurely. Otherwise, ioriot terminates itself automatically after ten minutes. Depending on the system load, the output file can grow to several gigabytes. Only metadata is logged, not the read and written data itself. When replaying later, only random data is used. Under certain circumstances, Systemtap may omit some system calls and issue warnings. This is to ensure that Systemtap does not consume too many resources.

+

A Ctrl-C (SIGINT) stops recording prematurely. Otherwise, ioriot terminates itself automatically after 1 hour. Depending on the system load, the output file can grow to several gigabytes. Only metadata is logged, not the read and written data itself. When replaying later, only random data is used. Under certain circumstances, Systemtap may omit some system calls and issue warnings. This is to ensure that Systemtap does not consume too many resources.

Test preparation

Then copy io.capture to a test system. The log also contains all accesses to the pseudo file systems devfs, sysfs and procfs. This makes little sense, which is why you must first generate a cleaned and playable version io.replay from io.capture as follows:

diff --git a/content/html/gemfeed/atom.xml b/content/html/gemfeed/atom.xml
index 7a48fb34..aa09d261 100644
--- a/content/html/gemfeed/atom.xml
+++ b/content/html/gemfeed/atom.xml
@@ -1,6 +1,6 @@
 
 
-    2021-05-08T10:29:53+01:00
+    2021-05-08T10:43:25+01:00
     buetow.org feed
     Having fun with computers!
     
@@ -223,7 +223,7 @@ jgs\__/'---'\__/
 % sudo ioriot -c io.capture
Screenshot I/O recording:Screenshot I/O recording
-

A Ctrl-C (SIGINT) stops recording prematurely. Otherwise, ioriot terminates itself automatically after ten minutes. Depending on the system load, the output file can grow to several gigabytes. Only metadata is logged, not the read and written data itself. When replaying later, only random data is used. Under certain circumstances, Systemtap may omit some system calls and issue warnings. This is to ensure that Systemtap does not consume too many resources.

+

A Ctrl-C (SIGINT) stops recording prematurely. Otherwise, ioriot terminates itself automatically after 1 hour. Depending on the system load, the output file can grow to several gigabytes. Only metadata is logged, not the read and written data itself. When replaying later, only random data is used. Under certain circumstances, Systemtap may omit some system calls and issue warnings. This is to ensure that Systemtap does not consume too many resources.

Test preparation

Then copy io.capture to a test system. The log also contains all accesses to the pseudo file systems devfs, sysfs and procfs. This makes little sense, which is why you must first generate a cleaned and playable version io.replay from io.capture as follows:

-- 
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